Abstract:
:A simple, rapid assay for the pancreatic isoenzyme of human serum amylase was developed. The assay utilized an immunoabsorbent prepared by coating latex beads with a monoclonal antibody specific for pancreatic amylase. Treatment of patient serum with immunoabsorbent removed pancreatic amylase, and measurement of residual amylase activity with standard total amylase methodology allowed estimation of the pancreatic amylase content. Extraction efficiency of pancreatic amylase was consistent at amylase concentrations up to 1,000 U/L (y = 0.97 x +16.7 U/L; r = 0.9995). The assay was standardized with purified pancreatic amylase added to neonatal serum (low endogenous activity). A comparison of patient specimen results with the results of a standard technique (cellulose acetate electrophoresis) yielded an excellent correlation (immunoabsorption result = 0.96 electrophoresis result + 1.2 U/L; r = 0.987). Salivary amylase did not interfere with the assay until levels exceeded 1,000 U/L. Daily analysis of a frozen serum pool yielded a coefficient of variation of 9.2% at mean pancreatic amylase value of 54 U/L (+/- 5 U/L). A normal range study found a strong influence of age, with pancreatic amylase levels increasing dramatically in the first 3 years of life, to stabilize at a range of 0-66 U/L thereafter.
journal_name
J Clin Lab Analjournal_title
Journal of clinical laboratory analysisauthors
Landt M,Hortin GL,Smith CH,Pashos G,Vaidya HC,Rosenblum JLdoi
10.1002/jcla.1860080104subject
Has Abstractpub_date
1994-01-01 00:00:00pages
10-5issue
1eissn
0887-8013issn
1098-2825journal_volume
8pub_type
杂志文章abstract:BACKGROUND:Oxidative stress is an imbalance between the reactive oxygen species and antioxidant system. In this study, total oxidative stress (TOS) and total antioxidant capacity (TAC) were investigated with a new and practical method in childhood iron-deficiency anemia. METHOD:During the study period 80 children betw...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.21589
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND:This study was aimed to investigate whether measurement of free testosterone and cortisol in saliva is a reliable alternative to their assessment in serum for monitoring physical fitness in professional athletes. METHODS:We studied 25 members of the soccer team Parma F.C., playing in Italian major football ...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.21929
更新日期:2016-09-01 00:00:00
abstract:BACKGROUND:Cellular and brain metabolism of dopamine can be correlated with a number of neurodegenerative disorders, our study was to explore a simple and efficient method to detect dopamine in real samples. METHODS:A new quantum dots (CdTe QDs) could be prepared using the hydrothermal method, the electrochemical bios...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22320
更新日期:2018-03-01 00:00:00
abstract::Recently, Siemens Diagnostics released a new calcium assay (CA_2) based on complex formation of calcium with Arsenazo III dye for use on the three automated, random access ADVIA Chemistry analyzers (1650, 2400, and 1200). We evaluated this method for analytical performance as well as potential interference from gadoli...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.20353
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:Early recognition and treatment for severe drug eruption are important in improving clinical outcomes. A few studies have reported laboratory parameters to evaluate the severity of drug eruptions. This study aimed to determine the association between serum ferritin and the severity of drug eruptions. METHOD...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23043
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:For the forensic aim, a sensitive and specific method using headspace gas chromatography coupled with mass spectrometry (GC/MS) has been developed for the quantitative determination of ethanol in blood using n-propanol as internal standard. GC was performed in isothermal mode with a GC run-time of 5.0 min. ...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.21698
更新日期:2014-09-01 00:00:00
abstract:BACKGROUND:Risperidone (RIS) is a widely used atypical antipsychotic drug. We developed and validated a sensitive and accurate LC-MS/MS method, which requires a small-volume of plasma and small-volume injection for measurement of RIS levels in ASD pediatric patients. We also investigated the relationship between RIS le...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22009
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:Reference intervals are critical for interpreting test results of a clinical laboratory. The aim of this study was to establish local reference intervals of complete blood count for healthy preschoolers in China. METHODS:Three thousand eight hundred and twenty-one blood specimens from children aged 4 months...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22095
更新日期:2017-09-01 00:00:00
abstract::Congenital hypoplastic anemias are a rare and heterogeneous group of disorders. This paper reviews new molecular diagnostic tests in two distinct forms of congenital anemias, anemia due to transplacental infection with B19 parvovirus and Fanconi anemia. In both instances, molecular assays making use of amplification o...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章,评审
doi:
更新日期:1997-01-01 00:00:00
abstract::The detection of hepatitis C virus (HCV) RNA by nucleic acid amplification techniques is the method of choice to differentiate between ongoing and past infection, and can be used to monitor the course of HCV infection. In this study, we evaluated the performance characteristics of a newly developed transcription-media...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.1042
更新日期:2001-01-01 00:00:00
abstract:BACKGROUND:The aim of this study was to explain the effects of microRNA-132 in renal cell carcinoma by regulating FOXM1 expression. METHODS:Thirty patients with renal cell carcinoma admitted to our hospital were enrolled, and their adjacent normal tissues and cancer tissues were taken. The expression of microRNA-132 w...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22969
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:The study aimed to explore the correlations of long non-coding RNA MALAT1 (lncRNA MALAT1) and its targets microRNA (miR)-125b, miR-133, miR-146a, and miR-203 with acute exacerbation risk, inflammation, and disease severity of chronic obstructive pulmonary disease (COPD). METHODS:Plasma samples were obtained ...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23410
更新日期:2020-09-01 00:00:00
abstract:BACKGROUND:Delta neutrophil index (DNI) is a new inflammatory marker and the present study aimed to evaluate the predictive value of the DNI for the presence of a perforation in elderly with acute appendicitis. METHODS:This retrospective observational study was conducted on 108 consecutive elderly patients (≥65 years ...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22177
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:The trends in usage of tumor markers, including CEA, SCC, NSE, Cyfra21-1, and ProGRP, in Chinese lung cancer patients in the real-world setting are not fully investigated. METHODS:A retrospective descriptive study was conducted using the database of Qilu Hospital of Shandong University, China between Januar...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23465
更新日期:2020-11-01 00:00:00
abstract::We developed enzyme immunoassays for human anti-Pichia pastoris components (PPC) IgG and anti-PPC IgE antibody titers. Anti-PPC IgG antibody assay were performed using antigen-coated plate and anti-human IgG peroxidase conjugate. The intra- and interassay coefficients of variation (CV) of anti-PPC IgG antibody were 1....
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Contradictory results have been reported previously in the analyses of cross-reactivity among Blomia tropicalis (Blo t), Dermatophagoides pteronyssinus (Der p), and Dermatophagoides farinae (Der f). This study aims to investigate the characteristics of co-sensitization and the IgE cross-reactivity among them...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22981
更新日期:2019-11-01 00:00:00
abstract::By using commercially available ELISA kits, serum IL-6 and TNF-alpha levels in healthy adults, and the levels of various cytokines in patients with primary biliary cirrhosis or chronic viral liver diseases, were investigated. IL-6 levels of healthy subjects were distributed in a wide range, and the distribution patter...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00
abstract::The matrix metalloproteinase matrilysin (MMP-7) is a member of the matrix metalloproteinase gene family, which is believed to play an important role in tumor invasion and metastasis. We have previously found that matrilysin mRNA is specifically expressed in colorectal cancers and adenomas and that its message is local...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.1860090504
更新日期:1995-01-01 00:00:00
abstract::Type IV collagen is a major component released from the glomerular and tubular basement membranes. To investigate the alteration of renal type IV collagen turnover in early stage diabetic nephropathy, urinary type IV collagen was measured by a highly sensitive one-step sandwich enzyme immunoassay (EIA). Urinary sample...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/(sici)1098-2825(1998)12:6<378::aid-jcla8>3
更新日期:1998-01-01 00:00:00
abstract::The experimental and clinical effectiveness of nasal salmon calcitonin (SCT) for treatment of osteoporosis in humans has been well established, but none is known yet about the pharmacokinetic property in relation to therapeutic efficacy, especially when used in a therapeutic dose range. This preclinical study was desi...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/(sici)1098-2825(1997)11:3<129::aid-jcla2>3
更新日期:1997-01-01 00:00:00
abstract::A microparticle-enhanced nephelometric immunoassay was developed for lactoferrin quantitation in human milk. It is based on the nephelometric measurement of the light scattered during the competitive immuno-agglutination of a microparticle-lactoferrin conjugate with an antilactoferrin antiserum. This immunoassay is se...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:Adiponectin, an adipocyte-derived protein, is known to play a key role in the processes leading to atherosclerosis and coronary artery disease (CAD) through its anti-atherogenic, anti-inflammatory, antioxidative, and anti-apoptotic properties. In the current study, we have studied the association of two sing...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22446
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:This study aimed to evaluate the association of circular RNA La-related RNA-binding protein 4 (circ-LARP4) with clinical features and prognosis in osteosarcoma patients, and further explore its effect on chemosensitivity in osteosarcoma cells. METHODS:Seventy-two osteosarcoma patients with Enneking stage II...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23045
更新日期:2020-02-01 00:00:00
abstract:BACKGROUND:The sialylation of serum proteins and lipids changes in liver diseases of different etiologies and could change the total sialic acid (TSA), lipid-bound SA (LSA), and free SA (FSA) levels in the sera. However, little is known of the relationship of serum SAs concentrations and the severity of liver disease. ...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.21711
更新日期:2014-11-01 00:00:00
abstract::The shortcomings of current methods of basophil enumeration detract from the clinical value of the basophil count. Moreover, sophisticated and costly techniques of automated basophil counting hardly can be validated for lack of a suitable reference method. We investigated whether a flow cytometric technique using doub...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/(SICI)1098-2825(1996)10:4<177::AID-JCLA2>3
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND:To evaluate clinical features, bacterial characteristics, and risk factors for shock and mortality of immunocompromised patients with Escherichia coli bacteremia. METHODS:A nearly 6-year retrospective study of E coli bacteremia in 188 immunocompromised patients at Xiangya Hospital was conducted. Demographic...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23319
更新日期:2020-08-01 00:00:00
abstract::An automated measurement of total and free hydroxyproline in serum or urine is presented that uses flow injection analysis. After exclusion of nonspecific substances, hydroxyproline was oxidized by chloramine-T and L-cysteine with Ehrlich's reagent. The linearity obtained was from 3.8 mumole/L to 1.22 mmole/L with goo...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.1860080504
更新日期:1994-01-01 00:00:00
abstract::Hematological parameters are affected by different factors that include age, sex, smoking, ethnicity, and environmental altitude. It has been justified that each population must establish its own normal reference intervals to be used in clinical assessments and interpretations. Hematological reference intervals for ad...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.20265
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:(a) To evaluate the clinical performance of endocrine analytes using the sigma metrics (σ) model. (b) To redesign quality control strategies for performance improvement. METHODS:The sigma values of the analytes were initially evaluated based on the allowable total error (TEa), bias, and coefficient of varia...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.23581
更新日期:2020-09-20 00:00:00
abstract:BACKGROUND:The current transfusion policy recommended for individuals with serologic weak-D phenotype is based on data derived from European-descent populations. Data referring to the distribution of RH alleles underlying weak-D phenotype among people of mixed origin are yet incomplete, and the applicability of Europea...
journal_title:Journal of clinical laboratory analysis
pub_type: 杂志文章
doi:10.1002/jcla.22596
更新日期:2018-11-01 00:00:00